Over 100 years ago, John McQuillan began quarrying limestone at Colinwell, so named because of the large natural spring well which rises at the site on the slopes of Colin Mountain near Belfast. Since then our Company, has progressed from being a quarrying and aggregate processing company to a walling product manufacturer.
Today, Colinwell Architectural Masonry, Martello Stone Walling, Facing Brick, Allan Block Retaining Wall and Landscape Walling Systems can be seen in use throughout Ireland and Great Britain.